Improvement in key-fasteners



S. T. PRUUDMAN.

, Key-Fasteners. N 15812], Patented De c.2 2,l874k gifz wi/ a UNITED STATES PATENT QFFICE.

SAMUEL T. PROUDMAN, OF MERIDEN, CONNECTICUT.

IMPROVEMENT IN KEY-FASTENERS.

Specification forming part of Letters Patent No. 158,121, dated December 22, 1874; application filed October 15, 1874.

To all whom it may concern:

Be it known that I, SAMUEL T. PROUD- MAN, of Meriden, in the county of New Haven and State of Connecticut, have invented a new Improvement in Key-Fastening; and I do hereby declare the following, when taken in connection with the accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and rep- A is the bar, hinged to the door, as shown, or may be to the escutcheon, preferably in a line diagonal to the key-hole. A slot, B, is formed in the bar, so that when turned down, as in Fig. 2, the slot will pass onto the bow C of the key, and prevent the turning of the key until the bar is turned away, as in Fig. 1. In order to prevent the bar being forced back by means of an instrument inserted through the key-hole, I arrange a bolt, D, in the end of the bar, which, when the bar is set over the bow, will pass through the bow, as shown, and thus lock the bar to the key.

I do not broadly claim a hinged slotted bar to pass over the bow of the key, as such, I am aware, is not new.

I claim- The combination of the slotted hinged bar A and locking-bolt D, as described.

SAML. T. PROUDMAN.

Witnesses:

JOSEPH H. BEGKETT, RALPH A. PALMER. 

